.file-select-left span, .file-select-right span {
    display: block;
    width: 100%
}

.area {
    display: flex;
    margin-top: 30px;
    min-height: 90vh;
}

.area-left, .area-right {
    width: 50%;
    margin: 0 auto;
}

input {
    display:none;
    text-align: center;
}

.area-left .file-select-left, .area-right .file-select-right {
    width : 90%;
    text-align : center;
    vertical-align : center;
    border : 2px dashed #ccc;
    border-radius : 6px;
    height : 104px;
    cursor : pointer;
    margin-left : 5%;
    color : #1e90ff;
    display :flex;
    flex-direction: column;
}


.file-content-left , .file-content-right{
    width:100%;
    height:100%;
    overflow-x: scroll;
    border-left:1px solid #ccc;
    padding-left: 10px;
}